11956043066 has 32 divisors (see below), whose sum is σ = 19956062016. Its totient is φ = 5326416000.

The previous prime is 11956043053. The next prime is 11956043111. The reversal of 11956043066 is 66034065911.

11956043066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364046 + ... + 395526.

It is an arithmetic number, because the mean of its divisors is an integer number (623626938).

Almost surely, 2^11956043066 is an apocalyptic number.

11956043066 is a deficient number, since it is larger than the sum of its proper divisors (8000018950).

11956043066 is a wasteful number, since it uses less digits than its factorization.

11956043066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31838.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 11956043066 in words is "eleven billion, nine hundred fifty-six million, forty-three thousand, sixty-six".